task_name string | initial_board string | solution string | title string | rules string | visual_elements string | rows int64 | cols int64 | initial_observation string | description string | task_type string | data_source string | difficulty string | hint string | hodoku_difficulty string |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
normal_sudoku_4890 | 2.....1...16.2..54.7.51..6.527.3..9.6819725.3.9...5..11....87....8.4.....6.3...1. | 235496187916827354874513962527134896681972543493685271149268735358741629762359418 | normal_sudoku_4890 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 2 . . . . . 1 . .
. 1 6 . 2 . . 5 4
. 7 . 5 1 . . 6 .
5 2 7 . 3 . . 9 .
6 8 1 9 7 2 5 . 3
. 9 . . . 5 . . 1
1 . . . . 8 7 . .
. . 8 . 4 . . . .
. 6 . 3 . . . 1 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 235496187916827354874513962527134896681972543493685271149268735358741629762359418 #1 Easy (314)
Full House: r5c8=4
Hidden Single: r6c8=7
Hidden Single: r1c9=7
Hidden Single: r9c7=4
Hidden Single: r6c7=2
Hidden Single: r1c8=8
Hidden Single: r9c9=8
Naked Single: r4c9=6
Full House: r4c7=8
Hid... | easy |
normal_sudoku_2729 | ..51.937..1......57....561...1..3.87.7.2189.68...9.....4.3.276...7.46..32....1.4. | 685129374412637895739485612921563487374218956856794231148352769597846123263971548 | normal_sudoku_2729 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . 5 1 . 9 3 7 .
. 1 . . . . . . 5
7 . . . . 5 6 1 .
. . 1 . . 3 . 8 7
. 7 . 2 1 8 9 . 6
8 . . . 9 . . . .
. 4 . 3 . 2 7 6 .
. . 7 . 4 6 . . 3
2 . . . . 1 . 4 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 685129374412637895739485612921563487374218956856794231148352769597846123263971548 #1 Extreme (2214)
Locked Candidates Type 2 (Claiming): 4 in r5 => r4c1,r6c3<>4
Hidden Pair: 3,6 in r9c23 => r9c2<>5, r9c23<>8, r9c23<>9
2-String Kite: 4 in r2c6,r4c7 (connected by r4c4,r6c6) => r2c7<>4
Locked Candidates Type 1... | extremely hard |
normal_sudoku_1639 | .67....121.42.7..69.2..8..73.9.8.1.4..6..9..8..1....73..58713.9..8.2...1.13946..5 | 867394512134257896952618437329785164476139258581462973645871329798523641213946785 | normal_sudoku_1639 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 6 7 . . . . 1 2
1 . 4 2 . 7 . . 6
9 . 2 . . 8 . . 7
3 . 9 . 8 . 1 . 4
. . 6 . . 9 . . 8
. . 1 . . . . 7 3
. . 5 8 7 1 3 . 9
. . 8 . 2 . . . 1
. 1 3 9 4 6 . . 5 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 867394512134257896952618437329785164476139258581462973645871329798523641213946785 #1 Easy (218)
Hidden Single: r6c7=9
Hidden Single: r2c8=9
Hidden Single: r8c2=9
Hidden Single: r1c5=9
Hidden Single: r8c7=6
Naked Single: r8c8=4
Naked Single: r7c8=2
Naked Single: r8c1=7
Naked Single: r5c8=5
... | easy |
normal_sudoku_1443 | .7.....8..9.5......2.13....68.4253.99528.3....34...82..4938126.86.......213..9458 | 375692184196548732428137596681425379952873641734916825549381267867254913213769458 | normal_sudoku_1443 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 7 . . . . . 8 .
. 9 . 5 . . . . .
. 2 . 1 3 . . . .
6 8 . 4 2 5 3 . 9
9 5 2 8 . 3 . . .
. 3 4 . . . 8 2 .
. 4 9 3 8 1 2 6 .
8 6 . . . . . . .
2 1 3 . . 9 4 5 8 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 375692184196548732428137596681425379952873641734916825549381267867254913213769458 #1 Easy (168)
Naked Single: r7c9=7
Full House: r7c1=5
Full House: r8c3=7
Naked Single: r3c1=4
Naked Single: r4c3=1
Full House: r4c8=7
Full House: r6c1=7
Naked Single: r8c4=2
Naked Single: r3c8=9
Naked Single:... | easy |
normal_sudoku_3274 | 3.715..2664..3.7.55..7..3...5.4..17.17.563...9...7156.43..17.5..1594..377693.5... | 387154926641239785592786341856492173174563892923871564438617259215948637769325418 | normal_sudoku_3274 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 3 . 7 1 5 . . 2 6
6 4 . . 3 . 7 . 5
5 . . 7 . . 3 . .
. 5 . 4 . . 1 7 .
1 7 . 5 6 3 . . .
9 . . . 7 1 5 6 .
4 3 . . 1 7 . 5 .
. 1 5 9 4 . . 3 7
7 6 9 3 . 5 . . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 387154926641239785592786341856492173174563892923871564438617259215948637769325418 #1 Hard (548)
Hidden Single: r3c6=6
Hidden Single: r4c3=6
Hidden Single: r7c4=6
Hidden Single: r8c7=6
Hidden Single: r1c6=4
Hidden Single: r4c9=3
Hidden Single: r6c3=3
Hidden Single: r6c9=4
Hidden Single: r5c3=4... | hard |
normal_sudoku_6339 | 4.5.1...9968.7...32.1..6..485..4...6....28.9.1.97653.8....3.8..58769..31.1..5...2 | 475213689968574213231986574853149726746328195129765348692431857587692431314857962 | normal_sudoku_6339 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 4 . 5 . 1 . . . 9
9 6 8 . 7 . . . 3
2 . 1 . . 6 . . 4
8 5 . . 4 . . . 6
. . . . 2 8 . 9 .
1 . 9 7 6 5 3 . 8
. . . . 3 . 8 . .
5 8 7 6 9 . . 3 1
. 1 . . 5 . . . 2 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 475213689968574213231986574853149726746328195129765348692431857587692431314857962 #1 Easy (168)
Full House: r3c5=8
Naked Single: r7c1=6
Naked Single: r8c7=4
Full House: r8c6=2
Naked Single: r9c1=3
Full House: r5c1=7
Naked Single: r1c6=3
Naked Single: r2c6=4
Naked Single: r9c3=4
Naked Singl... | easy |
normal_sudoku_866 | 92..7..4.5...8.29.748.9256..1.2...8...54.8.29.9...1.5...9...812...81.975...92.634 | 921576348536184297748392561413259786675438129892761453359647812264813975187925634 | normal_sudoku_866 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 9 2 . . 7 . . 4 .
5 . . . 8 . 2 9 .
7 4 8 . 9 2 5 6 .
. 1 . 2 . . . 8 .
. . 5 4 . 8 . 2 9
. 9 . . . 1 . 5 .
. . 9 . . . 8 1 2
. . . 8 1 . 9 7 5
. . . 9 2 . 6 3 4 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 921576348536184297748392561413259786675438129892761453359647812264813975187925634 #1 Easy (214)
Hidden Single: r2c9=7
Hidden Single: r2c6=4
Hidden Single: r4c6=9
Hidden Single: r6c1=8
Naked Single: r9c1=1
Naked Single: r9c3=7
Naked Single: r9c6=5
Full House: r9c2=8
Hidden Single: r5c7=1
Na... | easy |
normal_sudoku_2710 | ..1746.327.2..3.4..43...6.72.9.5847.5371249864........32....19.6.....7.4......36. | 951746832762813549843295617219658473537124986486379251325467198698531724174982365 | normal_sudoku_2710 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . 1 7 4 6 . 3 2
7 . 2 . . 3 . 4 .
. 4 3 . . . 6 . 7
2 . 9 . 5 8 4 7 .
5 3 7 1 2 4 9 8 6
4 . . . . . . . .
3 2 . . . . 1 9 .
6 . . . . . 7 . 4
. . . . . . 3 6 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 951746832762813549843295617219658473537124986486379251325467198698531724174982365 #1 Easy (238)
Hidden Single: r2c2=6
Naked Single: r4c2=1
Naked Single: r4c9=3
Full House: r4c4=6
Naked Single: r6c2=8
Full House: r6c3=6
Hidden Single: r2c9=9
Hidden Single: r9c1=1
Hidden Single: r9c2=7
Hidde... | easy |
normal_sudoku_3305 | .3...9..55.....2...965.....9.87..4..4532189766..9.4..8.....78.....84..1.38.6....2 | 132479685547186293896523147928765431453218976671934528219357864765842319384691752 | normal_sudoku_3305 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 3 . . . 9 . . 5
5 . . . . . 2 . .
. 9 6 5 . . . . .
9 . 8 7 . . 4 . .
4 5 3 2 1 8 9 7 6
6 . . 9 . 4 . . 8
. . . . . 7 8 . .
. . . 8 4 . . 1 .
3 8 . 6 . . . . 2 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 132479685547186293896523147928765431453218976671934528219357864765842319384691752 #1 Extreme (2708)
Locked Candidates Type 2 (Claiming): 4 in r3 => r12c8,r2c9<>4
XYZ-Wing: 1/3/5 in r4c9,r6c57 => r6c8<>3
Discontinuous Nice Loop: 3 r8c6 -3- r7c4 -1- r7c1 -2- r7c5 =2= r8c6 => r8c6<>3
Locked Candidates Type 1 (... | extremely hard |
normal_sudoku_1922 | .58..6....3.....98.1.9....7174......329581764865473129.....52.3.41.9..86..3.4...1 | 958736412732154698416928357174269835329581764865473129697815243241397586583642971 | normal_sudoku_1922 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 5 8 . . 6 . . .
. 3 . . . . . 9 8
. 1 . 9 . . . . 7
1 7 4 . . . . . .
3 2 9 5 8 1 7 6 4
8 6 5 4 7 3 1 2 9
. . . . . 5 2 . 3
. 4 1 . 9 . . 8 6
. . 3 . 4 . . . 1 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 958736412732154698416928357174269835329581764865473129697815243241397586583642971 #1 Easy (160)
Naked Single: r4c9=5
Full House: r1c9=2
Naked Single: r8c7=5
Naked Single: r4c8=3
Full House: r4c7=8
Naked Single: r9c7=9
Naked Single: r9c8=7
Full House: r7c8=4
Naked Single: r9c2=8
Full House:... | easy |
normal_sudoku_2645 | ..1.86.9.63915.8..58.9..1.6.5.6..2..3.6.9.71.1...7..6.863.4.95.2...6.483..58..6.. | 471286395639154827582937146754618239326495718198372564863741952217569483945823671 | normal_sudoku_2645 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . 1 . 8 6 . 9 .
6 3 9 1 5 . 8 . .
5 8 . 9 . . 1 . 6
. 5 . 6 . . 2 . .
3 . 6 . 9 . 7 1 .
1 . . . 7 . . 6 .
8 6 3 . 4 . 9 5 .
2 . . . 6 . 4 8 3
. . 5 8 . . 6 . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 471286395639154827582937146754618239326495718198372564863741952217569483945823671 #1 Easy (174)
Naked Single: r8c3=7
Naked Single: r8c4=5
Hidden Single: r4c1=7
Naked Single: r1c1=4
Full House: r9c1=9
Naked Single: r3c3=2
Full House: r1c2=7
Naked Single: r8c2=1
Full House: r8c6=9
Full House... | easy |
normal_sudoku_6523 | ..1.9.2359....38.63.8...9.4.1.9..3.78...3...959327...143....5921.935.748.85..9163 | 641897235972543816358612974214968357867135429593274681436781592129356748785429163 | normal_sudoku_6523 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . 1 . 9 . 2 3 5
9 . . . . 3 8 . 6
3 . 8 . . . 9 . 4
. 1 . 9 . . 3 . 7
8 . . . 3 . . . 9
5 9 3 2 7 . . . 1
4 3 . . . . 5 9 2
1 . 9 3 5 . 7 4 8
. 8 5 . . 9 1 6 3 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 641897235972543816358612974214968357867135429593274681436781592129356748785429163 #1 Hard (588)
Naked Single: r6c8=8
Empty Rectangle: 6 in b1 (r8c26) => r1c6<>6
W-Wing: 6/2 in r4c1,r8c6 connected by 2 in r9c15 => r4c6<>6
XY-Wing: 2/7/6 in r19c1,r8c2 => r13c2<>6
Hidden Single: r1c1=6
Naked Single: r4c1... | hard |
normal_sudoku_3209 | 2.58.7..4...5127...7...4.5.5....3..7647259.3..3....4.5.63..584...9...5...5...6.7. | 215837694496512783378694251581463927647259138932781465163975842729348516854126379 | normal_sudoku_3209 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 2 . 5 8 . 7 . . 4
. . . 5 1 2 7 . .
. 7 . . . 4 . 5 .
5 . . . . 3 . . 7
6 4 7 2 5 9 . 3 .
. 3 . . . . 4 . 5
. 6 3 . . 5 8 4 .
. . 9 . . . 5 . .
. 5 . . . 6 . 7 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 215837694496512783378694251581463927647259138932781465163975842729348516854126379 #1 Easy (234)
Naked Single: r5c7=1
Full House: r5c9=8
Hidden Single: r2c8=8
Naked Single: r2c2=9
Naked Single: r1c2=1
Hidden Single: r6c1=9
Hidden Single: r8c8=1
Naked Single: r8c6=8
Full House: r6c6=1
Naked ... | easy |
normal_sudoku_2575 | .79..841558...12...1..57.8..256741.8..8.1574214782.65.8517.6.2....5..8.1...1825.. | 679238415584961237213457986325674198968315742147829653851796324792543861436182579 | normal_sudoku_2575 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 7 9 . . 8 4 1 5
5 8 . . . 1 2 . .
. 1 . . 5 7 . 8 .
. 2 5 6 7 4 1 . 8
. . 8 . 1 5 7 4 2
1 4 7 8 2 . 6 5 .
8 5 1 7 . 6 . 2 .
. . . 5 . . 8 . 1
. . . 1 8 2 5 . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 679238415584961237213457986325674198968315742147829653851796324792543861436182579 #1 Unfair (1436)
Locked Candidates Type 1 (Pointing): 4 in b8 => r2c5<>4
Remote Pair: 3/9 r4c8 -9- r6c9 -3- r6c6 -9- r8c6 => r8c8<>3, r8c8<>9
Grouped Discontinuous Nice Loop: 3 r2c5 -3- r1c45 =3= r1c1 -3- r4c1 -9- r5c12 =9= r5c4 ... | unfair |
normal_sudoku_4866 | ..642.5..72.53.9...5...9.32.75.1.8..61.9.572.2....36..........8.4..9..5...7..42.. | 936421587721538964458679132375216849614985723289743615593162478142897356867354291 | normal_sudoku_4866 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . 6 4 2 . 5 . .
7 2 . 5 3 . 9 . .
. 5 . . . 9 . 3 2
. 7 5 . 1 . 8 . .
6 1 . 9 . 5 7 2 .
2 . . . . 3 6 . .
. . . . . . . . 8
. 4 . . 9 . . 5 .
. . 7 . . 4 2 . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 936421587721538964458679132375216849614985723289743615593162478142897356867354291 #1 Hard (852)
Hidden Single: r6c9=5
Hidden Single: r6c8=1
Locked Candidates Type 1 (Pointing): 6 in b3 => r2c6<>6
Locked Candidates Type 1 (Pointing): 7 in b3 => r1c6<>7
Locked Pair: 1,8 in r12c6 => r3c4,r78c6<>1, r3c45,r8c... | hard |
normal_sudoku_3585 | ....9...2..7..2..9.2.1..5.375.6..1.48....4..5..4....86648279351.7..316.8.3.8...27 | 361495872587362419429187563753628194896714235214953786648279351972531648135846927 | normal_sudoku_3585 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . . . 9 . . . 2
. . 7 . . 2 . . 9
. 2 . 1 . . 5 . 3
7 5 . 6 . . 1 . 4
8 . . . . 4 . . 5
. . 4 . . . . 8 6
6 4 8 2 7 9 3 5 1
. 7 . . 3 1 6 . 8
. 3 . 8 . . . 2 7 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 361495872587362419429187563753628194896714235214953786648279351972531648135846927 #1 Medium (312)
Locked Candidates Type 2 (Claiming): 8 in r3 => r1c6,r2c5<>8
Locked Candidates Type 2 (Claiming): 9 in c2 => r45c3,r6c1<>9
Hidden Single: r4c8=9
Naked Single: r8c8=4
Full House: r9c7=9
Naked Single: r8c4=... | medium |
normal_sudoku_5497 | .465..872...7.369.5...8.31.1...9.528.53...9.7...4..1...8..5.2399.2...451415.3.786 | 346519872821743695579286314164397528253861947798425163687154239932678451415932786 | normal_sudoku_5497 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 4 6 5 . . 8 7 2
. . . 7 . 3 6 9 .
5 . . . 8 . 3 1 .
1 . . . 9 . 5 2 8
. 5 3 . . . 9 . 7
. . . 4 . . 1 . .
. 8 . . 5 . 2 3 9
9 . 2 . . . 4 5 1
4 1 5 . 3 . 7 8 6 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 346519872821743695579286314164397528253861947798425163687154239932678451415932786 #1 Easy (156)
Naked Single: r3c9=4
Full House: r2c9=5
Full House: r6c9=3
Naked Single: r1c5=1
Naked Single: r6c8=6
Full House: r5c8=4
Naked Single: r1c1=3
Full House: r1c6=9
Naked Single: r2c2=2
Naked Single:... | easy |
normal_sudoku_1750 | .8..3.1.7.3.71...871.28.5..1.3...8..8421..6..957863241..4.7...6678.5....3.14..... | 489635127235714968716289534163542879842197653957863241524978316678351492391426785 | normal_sudoku_1750 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 8 . . 3 . 1 . 7
. 3 . 7 1 . . . 8
7 1 . 2 8 . 5 . .
1 . 3 . . . 8 . .
8 4 2 1 . . 6 . .
9 5 7 8 6 3 2 4 1
. . 4 . 7 . . . 6
6 7 8 . 5 . . . .
3 . 1 4 . . . . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 489635127235714968716289534163542879842197653957863241524978316678351492391426785 #1 Easy (164)
Full House: r4c2=6
Naked Single: r5c5=9
Naked Single: r4c4=5
Naked Single: r9c5=2
Full House: r4c5=4
Naked Single: r4c9=9
Naked Single: r5c6=7
Full House: r4c6=2
Full House: r4c8=7
Naked Single:... | easy |
normal_sudoku_702 | 4973.58..25....49.8.6.9457.5.2.4.6..964...735...65...97.5...1.....5..9.2.294.83.7 | 497365821253187496816294573532749618964821735178653249785932164341576982629418357 | normal_sudoku_702 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 4 9 7 3 . 5 8 . .
2 5 . . . . 4 9 .
8 . 6 . 9 4 5 7 .
5 . 2 . 4 . 6 . .
9 6 4 . . . 7 3 5
. . . 6 5 . . . 9
7 . 5 . . . 1 . .
. . . 5 . . 9 . 2
. 2 9 4 . 8 3 . 7 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 497365821253187496816294573532749618964821735178653249785932164341576982629418357 #1 Easy (240)
Full House: r6c7=2
Hidden Single: r6c8=4
Hidden Single: r9c8=5
Hidden Single: r3c4=2
Naked Single: r7c4=9
Hidden Single: r1c8=2
Hidden Single: r7c9=4
Hidden Single: r8c2=4
Hidden Single: r4c6=9
... | easy |
normal_sudoku_2302 | .1..3.54...65.4..15.41..23...275...4859.2671..7..8.....6.8.9......3.5.9...3.1.4.5 | 718632549326594871594178236632751984859426713471983652165849327247365198983217465 | normal_sudoku_2302 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 1 . . 3 . 5 4 .
. . 6 5 . 4 . . 1
5 . 4 1 . . 2 3 .
. . 2 7 5 . . . 4
8 5 9 . 2 6 7 1 .
. 7 . . 8 . . . .
. 6 . 8 . 9 . . .
. . . 3 . 5 . 9 .
. . 3 . 1 . 4 . 5 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 718632549326594871594178236632751984859426713471983652165849327247365198983217465 #1 Easy (180)
Naked Single: r5c9=3
Full House: r5c4=4
Naked Single: r4c2=3
Naked Single: r6c3=1
Naked Single: r6c4=9
Naked Single: r4c6=1
Full House: r6c6=3
Naked Single: r4c1=6
Full House: r6c1=4
Naked Singl... | easy |
normal_sudoku_2158 | .92..5436.5...27.973...952.....58...5.7.93.4..8.1....5..35.496.9...8.1...6.9.1... | 892715436651432789734869521349258617517693842286147395173524968925386174468971253 | normal_sudoku_2158 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 9 2 . . 5 4 3 6
. 5 . . . 2 7 . 9
7 3 . . . 9 5 2 .
. . . . 5 8 . . .
5 . 7 . 9 3 . 4 .
. 8 . 1 . . . . 5
. . 3 5 . 4 9 6 .
9 . . . 8 . 1 . .
. 6 . 9 . 1 . . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 892715436651432789734869521349258617517693842286147395173524968925386174468971253 #1 Hard (1310)
2-String Kite: 8 in r2c8,r7c1 (connected by r7c9,r9c8) => r2c1<>8
W-Wing: 1/8 in r1c1,r3c9 connected by 8 in r7c19 => r3c3<>1
X-Wing: 1 c38 r24 => r2c15,r4c129<>1
Hidden Pair: 1,9 in r4c38 => r4c3<>4, r4c3<>6, r... | hard |
normal_sudoku_3137 | .1...8.....7.269.1.3.41758...61...29...86217.1..7.965...1.7.2..4....1..5.5...3.1. | 214958367587326941639417582376145829945862173128739654891574236463281795752693418 | normal_sudoku_3137 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 1 . . . 8 . . .
. . 7 . 2 6 9 . 1
. 3 . 4 1 7 5 8 .
. . 6 1 . . . 2 9
. . . 8 6 2 1 7 .
1 . . 7 . 9 6 5 .
. . 1 . 7 . 2 . .
4 . . . . 1 . . 5
. 5 . . . 3 . 1 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 214958367587326941639417582376145829945862173128739654891574236463281795752693418 #1 Unfair (950)
Locked Candidates Type 1 (Pointing): 6 in b1 => r79c1<>6
Locked Candidates Type 1 (Pointing): 9 in b2 => r1c13<>9
Locked Candidates Type 1 (Pointing): 3 in b5 => r1c5<>3
Locked Candidates Type 1 (Pointing): 5 i... | unfair |
normal_sudoku_2512 | 7..1....33.89..12.149372856286.1....51...9..2...2...816...9......7..136.8..6.7.45 | 725168493368954127149372856286513974514789632973246581632495718457821369891637245 | normal_sudoku_2512 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 7 . . 1 . . . . 3
3 . 8 9 . . 1 2 .
1 4 9 3 7 2 8 5 6
2 8 6 . 1 . . . .
5 1 . . . 9 . . 2
. . . 2 . . . 8 1
6 . . . 9 . . . .
. . 7 . . 1 3 6 .
8 . . 6 . 7 . 4 5 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 725168493368954127149372856286513974514789632973246581632495718457821369891637245 #1 Easy (198)
Naked Single: r1c8=9
Naked Single: r1c7=4
Full House: r2c9=7
Naked Single: r7c9=8
Naked Single: r8c9=9
Full House: r4c9=4
Naked Single: r8c1=4
Full House: r6c1=9
Naked Single: r9c7=2
Naked Singl... | easy |
normal_sudoku_2332 | ..7.3946.6.9.4.3.73487..5292.....1..8..........5.87..298..5.......178..676.4..8.. | 157239468629845317348716529273964185896521734415387692984653271532178946761492853 | normal_sudoku_2332 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . 7 . 3 9 4 6 .
6 . 9 . 4 . 3 . 7
3 4 8 7 . . 5 2 9
2 . . . . . 1 . .
8 . . . . . . . .
. . 5 . 8 7 . . 2
9 8 . . 5 . . . .
. . . 1 7 8 . . 6
7 6 . 4 . . 8 . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 157239468629845317348716529273964185896521734415387692984653271532178946761492853 #1 Easy (254)
Hidden Single: r9c5=9
Naked Single: r4c5=6
Naked Single: r3c5=1
Full House: r3c6=6
Full House: r5c5=2
Hidden Single: r5c3=6
Hidden Single: r6c7=6
Hidden Single: r7c4=6
Hidden Single: r5c6=1
Hidd... | easy |
normal_sudoku_1238 | 8...........4...8.7..839.2.1279685343985.4..2....2....971.....8.8.19...52..6871.. | 842716953639452781715839426127968534398574612564321897971245368486193275253687149 | normal_sudoku_1238 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 8 . . . . . . . .
. . . 4 . . . 8 .
7 . . 8 3 9 . 2 .
1 2 7 9 6 8 5 3 4
3 9 8 5 . 4 . . 2
. . . . 2 . . . .
9 7 1 . . . . . 8
. 8 . 1 9 . . . 5
2 . . 6 8 7 1 . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 842716953639452781715839426127968534398574612564321897971245368486193275253687149 #1 Easy (226)
Hidden Single: r6c7=8
Hidden Single: r1c8=5
Hidden Single: r7c5=4
Naked Single: r7c8=6
Hidden Single: r7c6=5
Hidden Single: r2c5=5
Naked Single: r2c1=6
Naked Single: r8c1=4
Full House: r6c1=5
Na... | easy |
normal_sudoku_2179 | .78.534..39.4718...426..7..5147...26987.....3263....7872..6.....3.14...745...7.81 | 678253419395471862142689735514738926987526143263914578721865394839142657456397281 | normal_sudoku_2179 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 7 8 . 5 3 4 . .
3 9 . 4 7 1 8 . .
. 4 2 6 . . 7 . .
5 1 4 7 . . . 2 6
9 8 7 . . . . . 3
2 6 3 . . . . 7 8
7 2 . . 6 . . . .
. 3 . 1 4 . . . 7
4 5 . . . 7 . 8 1 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 678253419395471862142689735514738926987526143263914578721865394839142657456397281 #1 Easy (156)
Naked Single: r3c1=1
Naked Single: r4c7=9
Naked Single: r1c1=6
Full House: r2c3=5
Full House: r8c1=8
Naked Single: r4c6=8
Full House: r4c5=3
Naked Single: r2c8=6
Full House: r2c9=2
Naked Single:... | easy |
normal_sudoku_937 | ..2.1.......7645.....82....5..4762....3.9.84.....82.......3.468176248359438659127 | 852913674319764582647825931581476293723591846964382715295137468176248359438659127 | normal_sudoku_937 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . 2 . 1 . . . .
. . . 7 6 4 5 . .
. . . 8 2 . . . .
5 . . 4 7 6 2 . .
. . 3 . 9 . 8 4 .
. . . . 8 2 . . .
. . . . 3 . 4 6 8
1 7 6 2 4 8 3 5 9
4 3 8 6 5 9 1 2 7 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 852913674319764582647825931581476293723591846964382715295137468176248359438659127 #1 Easy (230)
Naked Single: r7c4=1
Full House: r7c6=7
Naked Single: r5c4=5
Naked Single: r5c6=1
Full House: r6c4=3
Full House: r1c4=9
Naked Single: r5c9=6
Naked Single: r5c2=2
Full House: r5c1=7
Hidden Single... | easy |
normal_sudoku_1755 | .15..283..3...621926....7.48.6..794.3.....6...9.62.5..1..27.3656..35.42.5.3.681.7 | 915742836437586219268913754856137942342895671791624583184279365679351428523468197 | normal_sudoku_1755 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 1 5 . . 2 8 3 .
. 3 . . . 6 2 1 9
2 6 . . . . 7 . 4
8 . 6 . . 7 9 4 .
3 . . . . . 6 . .
. 9 . 6 2 . 5 . .
1 . . 2 7 . 3 6 5
6 . . 3 5 . 4 2 .
5 . 3 . 6 8 1 . 7 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 915742836437586219268913754856137942342895671791624583184279365679351428523468197 #1 Easy (156)
Naked Single: r1c9=6
Full House: r3c8=5
Naked Single: r8c9=8
Full House: r9c8=9
Naked Single: r8c2=7
Naked Single: r9c4=4
Full House: r9c2=2
Naked Single: r8c3=9
Full House: r8c6=1
Full House: r... | easy |
normal_sudoku_1754 | ..971...84...6.975...49..6......76....79248533.518679..36.71.8...86....7...8.92.6 | 659712348412368975873495162984537621167924853325186794536271489298643517741859236 | normal_sudoku_1754 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . 9 7 1 . . . 8
4 . . . 6 . 9 7 5
. . . 4 9 . . 6 .
. . . . . 7 6 . .
. . 7 9 2 4 8 5 3
3 . 5 1 8 6 7 9 .
. 3 6 . 7 1 . 8 .
. . 8 6 . . . . 7
. . . 8 . 9 2 . 6 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 659712348412368975873495162984537621167924853325186794536271489298643517741859236 #1 Easy (184)
Hidden Single: r7c9=9
Hidden Single: r7c7=4
Naked Single: r1c7=3
Naked Single: r3c7=1
Full House: r8c7=5
Naked Single: r3c9=2
Full House: r1c8=4
Naked Single: r3c3=3
Naked Single: r6c9=4
Full Ho... | easy |
normal_sudoku_175 | ...87..5.78..9..3..4961.287..17..892..7..831.8..9.174..24187.6..7.349.28..85..47. | 612873954785294631349615287451736892297458316863921745924187563576349128138562479 | normal_sudoku_175 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . . 8 7 . . 5 .
7 8 . . 9 . . 3 .
. 4 9 6 1 . 2 8 7
. . 1 7 . . 8 9 2
. . 7 . . 8 3 1 .
8 . . 9 . 1 7 4 .
. 2 4 1 8 7 . 6 .
. 7 . 3 4 9 . 2 8
. . 8 5 . . 4 7 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 612873954785294631349615287451736892297458316863921745924187563576349128138562479 #1 Hard (858)
Locked Candidates Type 1 (Pointing): 1 in b1 => r1c79<>1
Locked Candidates Type 1 (Pointing): 3 in b2 => r4c6<>3
Locked Candidates Type 1 (Pointing): 5 in b2 => r4c6<>5
Locked Candidates Type 1 (Pointing): 5 in b... | hard |
normal_sudoku_3195 | ....83.92..9..58.38...9..1.6.735928.3..8.69.5598..2.3....5.13.91..92..589...3812. | 461783592279165843853294716617359284324816975598472631782541369136927458945638127 | normal_sudoku_3195 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . . . 8 3 . 9 2
. . 9 . . 5 8 . 3
8 . . . 9 . . 1 .
6 . 7 3 5 9 2 8 .
3 . . 8 . 6 9 . 5
5 9 8 . . 2 . 3 .
. . . 5 . 1 3 . 9
1 . . 9 2 . . 5 8
9 . . . 3 8 1 2 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 461783592279165843853294716617359284324816975598472631782541369136927458945638127 #1 Extreme (5222)
Hidden Single: r7c2=8
X-Wing: 6 c58 r27 => r2c24,r7c3<>6
Almost Locked Set XZ-Rule: A=r1c1 {47}, B=r245c2 {1247}, X=7, Z=4 => r13c2<>4
Almost Locked Set XZ-Rule: A=r12c1 {247}, B=r245c2 {1247}, X=7, Z=2 => r3... | extremely hard |
normal_sudoku_4848 | 1.57428....2.9...448.3....2.....93.5.5.43.92.6.....4....6.84.1..1.56.2.......7..3 | 165742839372896154489351762824619375751438926693275481236984517917563248548127693 | normal_sudoku_4848 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 1 . 5 7 4 2 8 . .
. . 2 . 9 . . . 4
4 8 . 3 . . . . 2
. . . . . 9 3 . 5
. 5 . 4 3 . 9 2 .
6 . . . . . 4 . .
. . 6 . 8 4 . 1 .
. 1 . 5 6 . 2 . .
. . . . . 7 . . 3 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 165742839372896154489351762824619375751438926693275481236984517917563248548127693 #1 Hard (592)
Naked Single: r8c6=3
Hidden Single: r6c3=3
Hidden Single: r6c2=9
Hidden Single: r3c3=9
Locked Candidates Type 1 (Pointing): 7 in b1 => r2c78<>7
Locked Candidates Type 1 (Pointing): 2 in b4 => r4c45<>2
Hi... | hard |
normal_sudoku_592 | 71598..32.29.7....6..21.579.9...17.....43..9.1..79...394386...52..1..3.8..13....7 | 715986432429573816638214579392651784576438291184792653943867125257149368861325947 | normal_sudoku_592 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 7 1 5 9 8 . . 3 2
. 2 9 . 7 . . . .
6 . . 2 1 . 5 7 9
. 9 . . . 1 7 . .
. . . 4 3 . . 9 .
1 . . 7 9 . . . 3
9 4 3 8 6 . . . 5
2 . . 1 . . 3 . 8
. . 1 3 . . . . 7 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 715986432429573816638214579392651784576438291184792653943867125257149368861325947 #1 Easy (188)
Hidden Single: r4c1=3
Hidden Single: r3c2=3
Naked Single: r3c6=4
Full House: r3c3=8
Full House: r2c1=4
Naked Single: r1c6=6
Full House: r1c7=4
Naked Single: r2c4=5
Full House: r2c6=3
Full House:... | easy |
normal_sudoku_2188 | 4...3859.9.....32.563...8148..45.1737....12..1..7..6.96..24593.351...4822.....76. | 472138596918564327563927814829456173746391258135782649687245931351679482294813765 | normal_sudoku_2188 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 4 . . . 3 8 5 9 .
9 . . . . . 3 2 .
5 6 3 . . . 8 1 4
8 . . 4 5 . 1 7 3
7 . . . . 1 2 . .
1 . . 7 . . 6 . 9
6 . . 2 4 5 9 3 .
3 5 1 . . . 4 8 2
2 . . . . . 7 6 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 472138596918564327563927814829456173746391258135782649687245931351679482294813765 #1 Easy (156)
Naked Single: r3c4=9
Naked Single: r7c9=1
Full House: r9c9=5
Naked Single: r8c4=6
Naked Single: r5c9=8
Naked Single: r1c4=1
Naked Single: r5c4=3
Naked Single: r2c4=5
Full House: r9c4=8
Naked Sin... | easy |
normal_sudoku_183 | 97.13.6..2....41....1...7...3.548.91.1.279386.9.3615..129.53.67......91..6.91..53 | 974135628286794135351826749637548291415279386892361574129453867543687912768912453 | normal_sudoku_183 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 9 7 . 1 3 . 6 . .
2 . . . . 4 1 . .
. . 1 . . . 7 . .
. 3 . 5 4 8 . 9 1
. 1 . 2 7 9 3 8 6
. 9 . 3 6 1 5 . .
1 2 9 . 5 3 . 6 7
. . . . . . 9 1 .
. 6 . 9 1 . . 5 3 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 974135628286794135351826749637548291415279386892361574129453867543687912768912453 #1 Easy (176)
Naked Single: r4c7=2
Naked Single: r2c8=3
Naked Single: r6c9=4
Full House: r6c8=7
Naked Single: r6c1=8
Full House: r6c3=2
Hidden Single: r2c4=7
Hidden Single: r9c6=2
Naked Single: r1c6=5
Naked S... | easy |
normal_sudoku_333 | 5.6371.49931842756....9.318..521.....6...45...2..6..83.17.....56581.7....9..5.... | 586371249931842756472596318845213697763984521129765483217439865658127934394658172 | normal_sudoku_333 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 5 . 6 3 7 1 . 4 9
9 3 1 8 4 2 7 5 6
. . . . 9 . 3 1 8
. . 5 2 1 . . . .
. 6 . . . 4 5 . .
. 2 . . 6 . . 8 3
. 1 7 . . . . . 5
6 5 8 1 . 7 . . .
. 9 . . 5 . . . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 586371249931842756472596318845213697763984521129765483217439865658127934394658172 #1 Hard (1044)
Full House: r1c7=2
Full House: r1c2=8
Locked Candidates Type 1 (Pointing): 9 in b8 => r7c78<>9
Locked Candidates Type 2 (Claiming): 4 in r8 => r79c7,r9c9<>4
Naked Pair: 4,7 in r4c29 => r4c17<>4, r4c18<>7
L... | hard |
normal_sudoku_3557 | .3.47..514.15.973....321.8424.6..19..7...28....9.45..3.5..1.4..6..25.3.......35.8 | 832476951461589732597321684245638197376192845189745263953817426618254379724963518 | normal_sudoku_3557 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 3 . 4 7 . . 5 1
4 . 1 5 . 9 7 3 .
. . . 3 2 1 . 8 4
2 4 . 6 . . 1 9 .
. 7 . . . 2 8 . .
. . 9 . 4 5 . . 3
. 5 . . 1 . 4 . .
6 . . 2 5 . 3 . .
. . . . . 3 5 . 8 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 832476951461589732597321684245638197376192845189745263953817426618254379724963518 #1 Hard (502)
Hidden Single: r5c8=4
Hidden Single: r9c3=4
Hidden Single: r8c6=4
Locked Candidates Type 1 (Pointing): 8 in b8 => r7c13<>8
Naked Pair: 6,9 in r3c27 => r3c1<>9, r3c3<>6
Skyscraper: 2 in r2c9,r9c8 (connected ... | hard |
normal_sudoku_835 | .3.7.4.....7.....424591.67.5..842.6....591842428367..5..4..9.3...2...4.91..45.28. | 936724518817635924245918673591842367763591842428367195654289731382176459179453286 | normal_sudoku_835 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 3 . 7 . 4 . . .
. . 7 . . . . . 4
2 4 5 9 1 . 6 7 .
5 . . 8 4 2 . 6 .
. . . 5 9 1 8 4 2
4 2 8 3 6 7 . . 5
. . 4 . . 9 . 3 .
. . 2 . . . 4 . 9
1 . . 4 5 . 2 8 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 936724518817635924245918673591842367763591842428367195654289731382176459179453286 #1 Unfair (1400)
Hidden Single: r2c6=5
Hidden Single: r2c4=6
Naked Single: r8c4=1
Full House: r7c4=2
Naked Single: r8c8=5
Hidden Single: r1c7=5
Hidden Single: r7c2=5
Locked Candidates Type 1 (Pointing): 1 in b4 => ... | unfair |
normal_sudoku_2222 | .3.18.42....4.971314..2385..7..4.23.6......48.14...675.8.3.4.97...2.83644...7..82 | 539187426826459713147623859978546231652731948314892675281364597795218364463975182 | normal_sudoku_2222 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 3 . 1 8 . 4 2 .
. . . 4 . 9 7 1 3
1 4 . . 2 3 8 5 .
. 7 . . 4 . 2 3 .
6 . . . . . . 4 8
. 1 4 . . . 6 7 5
. 8 . 3 . 4 . 9 7
. . . 2 . 8 3 6 4
4 . . . 7 . . 8 2 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 539187426826459713147623859978546231652731948314892675281364597795218364463975182 #1 Easy (246)
Naked Single: r6c6=2
Hidden Single: r5c7=9
Full House: r4c9=1
Hidden Single: r9c3=3
Hidden Single: r6c1=3
Naked Single: r6c5=9
Full House: r6c4=8
Hidden Single: r5c5=3
Hidden Single: r9c4=9
Hidd... | easy |
normal_sudoku_3451 | 52.......4....36.21.82...5.914.7...8.5..1..7.6....41..3..69...1....21.....143.9.. | 526748319497153682138269754914576238853912476672384195345697821769821543281435967 | normal_sudoku_3451 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 5 2 . . . . . . .
4 . . . . 3 6 . 2
1 . 8 2 . . . 5 .
9 1 4 . 7 . . . 8
. 5 . . 1 . . 7 .
6 . . . . 4 1 . .
3 . . 6 9 . . . 1
. . . . 2 1 . . .
. . 1 4 3 . 9 . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 526748319497153682138269754914576238853912476672384195345697821769821543281435967 #1 Hard (900)
Locked Pair: 7,9 in r2c23 => r1c3,r2c4,r3c2<>7, r1c3,r2c48,r3c2<>9
Locked Candidates Type 1 (Pointing): 6 in b5 => r13c6<>6
Locked Candidates Type 2 (Claiming): 7 in c1 => r7c23,r8c23,r9c2<>7
Naked Pair: 5,8 in r... | hard |
normal_sudoku_2377 | 8725.6......2....8.193..526...4....1...93.2.52...5..97.5674..827.48..6........7.. | 872516439563294178419387526935472861687931245241658397156743982794825613328169754 | normal_sudoku_2377 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 8 7 2 5 . 6 . . .
. . . 2 . . . . 8
. 1 9 3 . . 5 2 6
. . . 4 . . . . 1
. . . 9 3 . 2 . 5
2 . . . 5 . . 9 7
. 5 6 7 4 . . 8 2
7 . 4 8 . . 6 . .
. . . . . . 7 . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 872516439563294178419387526935472861687931245241658397156743982794825613328169754 #1 Medium (448)
Naked Single: r3c1=4
Hidden Single: r2c8=7
Hidden Single: r2c6=4
Locked Candidates Type 1 (Pointing): 3 in b1 => r2c7<>3
Locked Candidates Type 1 (Pointing): 1 in b2 => r89c5<>1
Locked Candidates Type 1 (... | medium |
normal_sudoku_3226 | 8.563....37..5468..64....355273..841143278.566895413..43..25........35...5..1...3 | 815639274372154689964782135527396841143278956689541327431925768798463512256817493 | normal_sudoku_3226 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 8 . 5 6 3 . . . .
3 7 . . 5 4 6 8 .
. 6 4 . . . . 3 5
5 2 7 3 . . 8 4 1
1 4 3 2 7 8 . 5 6
6 8 9 5 4 1 3 . .
4 3 . . 2 5 . . .
. . . . . 3 5 . .
. 5 . . 1 . . . 3 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 815639274372154689964782135527396841143278956689541327431925768798463512256817493 #1 Hard (584)
Full House: r5c7=9
Empty Rectangle: 9 in b3 (r18c2) => r8c9<>9
W-Wing: 9/1 in r2c4,r8c2 connected by 1 in r1c2,r2c3 => r8c4<>9
XY-Wing: 1/2/9 in r1c2,r2c39 => r1c89<>9
Hidden Single: r2c9=9
Naked Single: r2... | hard |
normal_sudoku_5286 | ..52.6..8.78..31..4.6.....3683..2579....65...5..3...1....72.......6..9.7.67..9.8. | 135276498278943165496581723683412579719865342542397816954728631821634957367159284 | normal_sudoku_5286 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . 5 2 . 6 . . 8
. 7 8 . . 3 1 . .
4 . 6 . . . . . 3
6 8 3 . . 2 5 7 9
. . . . 6 5 . . .
5 . . 3 . . . 1 .
. . . 7 2 . . . .
. . . 6 . . 9 . 7
. 6 7 . . 9 . 8 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 135276498278943165496581723683412579719865342542397816954728631821634957367159284 #1 Unfair (1046)
Hidden Single: r5c1=7
Locked Candidates Type 1 (Pointing): 1 in b4 => r5c4<>1
Locked Candidates Type 2 (Claiming): 4 in r4 => r5c4,r6c56<>4
Locked Candidates Type 2 (Claiming): 4 in c6 => r89c5,r9c4<>4
Lock... | unfair |
normal_sudoku_6818 | .82..6.3...6...8..3...9..6..619...5.23975..868....29..143.....55283.96..697..53.8 | 982476531476531829315298764761983452239754186854612973143867295528349617697125348 | normal_sudoku_6818 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 8 2 . . 6 . 3 .
. . 6 . . . 8 . .
3 . . . 9 . . 6 .
. 6 1 9 . . . 5 .
2 3 9 7 5 . . 8 6
8 . . . . 2 9 . .
1 4 3 . . . . . 5
5 2 8 3 . 9 6 . .
6 9 7 . . 5 3 . 8 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 982476531476531829315298764761983452239754186854612973143867295528349617697125348 #1 Extreme (4644)
Hidden Single: r7c8=9
Empty Rectangle: 2 in b2 (r29c8) => r9c4<>2
Finned Swordfish: 1 c267 r235 fr1c7 => r2c89,r3c9<>1
Grouped Continuous Nice Loop: 1/2/4/5/7/8 2= r3c4 =8= r3c6 -8- r7c6 -7- r7c7 -2- r9c8 =2=... | extremely hard |
normal_sudoku_1661 | 2..98..56..56..2..6..2.5.3..9.754..2..21963...6732859.7..56...3..6.1.7....1...625 | 234987156975631248618245937193754862852196374467328591789562413526413789341879625 | normal_sudoku_1661 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 2 . . 9 8 . . 5 6
. . 5 6 . . 2 . .
6 . . 2 . 5 . 3 .
. 9 . 7 5 4 . . 2
. . 2 1 9 6 3 . .
. 6 7 3 2 8 5 9 .
7 . . 5 6 . . . 3
. . 6 . 1 . 7 . .
. . 1 . . . 6 2 5 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 234987156975631248618245937193754862852196374467328591789562413526413789341879625 #1 Medium (364)
Hidden Single: r4c8=6
Locked Candidates Type 1 (Pointing): 4 in b2 => r9c5<>4
Locked Candidates Type 1 (Pointing): 1 in b4 => r2c1<>1
Naked Pair: 4,8 in r8c48 => r8c129<>4, r8c129<>8
Naked Single: r8c9=9
... | medium |
normal_sudoku_1131 | ..2.9.5.......3.4..9.8..3.61.......5.4735..8..59...7..9.6.31.5..8..7.26...56....3 | 362194578871563942594827316138749625247356189659218734926431857483975261715682493 | normal_sudoku_1131 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . 2 . 9 . 5 . .
. . . . . 3 . 4 .
. 9 . 8 . . 3 . 6
1 . . . . . . . 5
. 4 7 3 5 . . 8 .
. 5 9 . . . 7 . .
9 . 6 . 3 1 . 5 .
. 8 . . 7 . 2 6 .
. . 5 6 . . . . 3 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 362194578871563942594827316138749625247356189659218734926431857483975261715682493 #1 Extreme (3490)
Locked Candidates Type 1 (Pointing): 1 in b5 => r6c89<>1
Locked Candidates Type 1 (Pointing): 8 in b8 => r9c7<>8
Skyscraper: 9 in r8c4,r9c8 (connected by r4c48) => r8c9,r9c6<>9
Naked Triple: 2,4,8 in r7c4,r9c... | extremely hard |
normal_sudoku_5562 | .7..4......1..6....631.725..496351..6579.1...31..74695..671..4.7.4.63.1.13.4.9... | 975342861281596437463187259849635172657921384312874695526718943794263518138459726 | normal_sudoku_5562 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 7 . . 4 . . . .
. . 1 . . 6 . . .
. 6 3 1 . 7 2 5 .
. 4 9 6 3 5 1 . .
6 5 7 9 . 1 . . .
3 1 . . 7 4 6 9 5
. . 6 7 1 . . 4 .
7 . 4 . 6 3 . 1 .
1 3 . 4 . 9 . . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 975342861281596437463187259849635172657921384312874695526718943794263518138459726 #1 Unfair (1710)
Hidden Single: r1c9=1
Hidden Single: r1c8=6
Hidden Single: r9c9=6
Skyscraper: 5 in r1c3,r2c5 (connected by r9c35) => r1c4,r2c1<>5
Finned Franken Swordfish: 2 r59b4 c358 fr4c1 fr5c9 => r4c8<>2
Sashimi Swo... | unfair |
normal_sudoku_4539 | ..87...94.945..2..2....4..3.458.71...2..61...18..593......7.4.14....8.3..6..459.2 | 318726594794513268256984713645837129923461857187259346539672481472198635861345972 | normal_sudoku_4539 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . 8 7 . . . 9 4
. 9 4 5 . . 2 . .
2 . . . . 4 . . 3
. 4 5 8 . 7 1 . .
. 2 . . 6 1 . . .
1 8 . . 5 9 3 . .
. . . . 7 . 4 . 1
4 . . . . 8 . 3 .
. 6 . . 4 5 9 . 2 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 318726594794513268256984713645837129923461857187259346539672481472198635861345972 #1 Extreme (2724)
Locked Candidates Type 1 (Pointing): 8 in b9 => r235c8<>8
Naked Pair: 6,7 in r6c39 => r6c8<>6, r6c8<>7
Empty Rectangle: 3 in b1 (r4c15) => r1c5<>3
Empty Rectangle: 7 in b9 (r38c2) => r3c8<>7
Grouped Discon... | extremely hard |
normal_sudoku_86 | 5.49....7.12.7.59.9761.5.241.72.94584285...79.957482..7516.......93..7.......7... | 584926317312874596976135824137269458428513679695748231751682943849351762263497185 | normal_sudoku_86 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 5 . 4 9 . . . . 7
. 1 2 . 7 . 5 9 .
9 7 6 1 . 5 . 2 4
1 . 7 2 . 9 4 5 8
4 2 8 5 . . . 7 9
. 9 5 7 4 8 2 . .
7 5 1 6 . . . . .
. . 9 3 . . 7 . .
. . . . . 7 . . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 584926317312874596976135824137269458428513679695748231751682943849351762263497185 #1 Hard (602)
Full House: r9c3=3
Locked Candidates Type 1 (Pointing): 1 in b5 => r5c7<>1
2-String Kite: 8 in r3c7,r9c4 (connected by r2c4,r3c5) => r9c7<>8
Turbot Fish: 8 r1c2 =8= r2c1 -8- r2c4 =8= r9c4 => r9c2<>8
Empty Rect... | hard |
normal_sudoku_2510 | ...7..2...2..9...8.....314...9..5.34...97.58256.34.9171....74....6.89.2..9.6..8.. | 914758263623491758857263149279815634431976582568342917182537496746189325395624871 | normal_sudoku_2510 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . . 7 . . 2 . .
. 2 . . 9 . . . 8
. . . . . 3 1 4 .
. . 9 . . 5 . 3 4
. . . 9 7 . 5 8 2
5 6 . 3 4 . 9 1 7
1 . . . . 7 4 . .
. . 6 . 8 9 . 2 .
. 9 . 6 . . 8 . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 914758263623491758857263149279815634431976582568342917182537496746189325395624871 #1 Hard (518)
Full House: r4c7=6
Hidden Single: r5c6=6
Locked Candidates Type 1 (Pointing): 7 in b3 => r2c13<>7
Locked Candidates Type 1 (Pointing): 1 in b5 => r4c2<>1
Hidden Pair: 6,9 in r7c89 => r7c89<>5, r7c9<>3
Skysc... | hard |
normal_sudoku_1834 | 1...8376..7..69.5..6.4..9..9...468...46..8..98..9..426.238..69..8.69.2..6..372... | 192583764478169352365427981931246875246758139857931426523814697784695213619372548 | normal_sudoku_1834 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 1 . . . 8 3 7 6 .
. 7 . . 6 9 . 5 .
. 6 . 4 . . 9 . .
9 . . . 4 6 8 . .
. 4 6 . . 8 . . 9
8 . . 9 . . 4 2 6
. 2 3 8 . . 6 9 .
. 8 . 6 9 . 2 . .
6 . . 3 7 2 . . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 192583764478169352365427981931246875246758139857931426523814697784695213619372548 #1 Unfair (1652)
Hidden Single: r3c6=7
Hidden Single: r6c3=7
Locked Candidates Type 1 (Pointing): 3 in b1 => r5c1<>3
Locked Candidates Type 1 (Pointing): 4 in b3 => r789c9<>4
2-String Kite: 2 in r3c5,r4c3 (connected by r4c4... | unfair |
normal_sudoku_5957 | 764..3.128.54.26.99...6...41.8...946..967.3816.3..172535...72.82...5...7.......53 | 764593812835412679912768534178235946529674381643981725356147298281359467497826153 | normal_sudoku_5957 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 7 6 4 . . 3 . 1 2
8 . 5 4 . 2 6 . 9
9 . . . 6 . . . 4
1 . 8 . . . 9 4 6
. . 9 6 7 . 3 8 1
6 . 3 . . 1 7 2 5
3 5 . . . 7 2 . 8
2 . . . 5 . . . 7
. . . . . . . 5 3 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 764593812835412679912768534178235946529674381643981725356147298281359467497826153 #1 Easy (156)
Naked Single: r2c5=1
Naked Single: r4c6=5
Naked Single: r6c2=4
Naked Single: r9c1=4
Full House: r5c1=5
Naked Single: r2c2=3
Full House: r2c8=7
Naked Single: r3c6=8
Naked Single: r5c6=4
Full Hous... | easy |
normal_sudoku_4757 | 3.67...2.5.7...43..42.3.6.763...17..25.37.9...7...82.3.6.5.3.727.386254..25..73.6 | 386749125517286439942135687638921754251374968479658213164593872793862541825417396 | normal_sudoku_4757 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 3 . 6 7 . . . 2 .
5 . 7 . . . 4 3 .
. 4 2 . 3 . 6 . 7
6 3 . . . 1 7 . .
2 5 . 3 7 . 9 . .
. 7 . . . 8 2 . 3
. 6 . 5 . 3 . 7 2
7 . 3 8 6 2 5 4 .
. 2 5 . . 7 3 . 6 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 386749125517286439942135687638921754251374968479658213164593872793862541825417396 #1 Medium (312)
Locked Candidates Type 1 (Pointing): 8 in b4 => r7c3<>8
Locked Candidates Type 1 (Pointing): 5 in b5 => r1c5<>5
Locked Candidates Type 1 (Pointing): 8 in b7 => r3c1<>8
Hidden Single: r3c8=8
Naked Single: r1c... | medium |
normal_sudoku_284 | 15.6.7..276...45.124.5197....1348.9...4..5....3..614....6.73..44..1.6....174.2.5. | 158637942769824531243519768671348295824795316935261487586973124492156873317482659 | normal_sudoku_284 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 1 5 . 6 . 7 . . 2
7 6 . . . 4 5 . 1
2 4 . 5 1 9 7 . .
. . 1 3 4 8 . 9 .
. . 4 . . 5 . . .
. 3 . . 6 1 4 . .
. . 6 . 7 3 . . 4
4 . . 1 . 6 . . .
. 1 7 4 . 2 . 5 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 158637942769824531243519768671348295824795316935261487586973124492156873317482659 #1 Easy (248)
Hidden Single: r2c3=9
Hidden Single: r1c7=9
Hidden Single: r1c8=4
Hidden Single: r9c1=3
Hidden Single: r7c1=5
Naked Single: r4c1=6
Naked Single: r4c7=2
Naked Single: r4c2=7
Full House: r4c9=5
Hi... | easy |
normal_sudoku_4561 | 8597..2..64...5..1.13............7....1.43..993..67142.9..8.427.8..79315...4..698 | 859714236642935871713628954564192783271843569938567142195386427486279315327451698 | normal_sudoku_4561 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 8 5 9 7 . . 2 . .
6 4 . . . 5 . . 1
. 1 3 . . . . . .
. . . . . . 7 . .
. . 1 . 4 3 . . 9
9 3 . . 6 7 1 4 2
. 9 . . 8 . 4 2 7
. 8 . . 7 9 3 1 5
. . . 4 . . 6 9 8 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 859714236642935871713628954564192783271843569938567142195386427486279315327451698 #1 Medium (452)
Locked Candidates Type 1 (Pointing): 6 in b7 => r4c3<>6
Naked Triple: 3,4,6 in r1c89,r3c9 => r2c8<>3, r3c8<>6
Locked Candidates Type 1 (Pointing): 3 in b3 => r1c5<>3
Naked Single: r1c5=1
Naked Triple: 1,2,6 ... | medium |
normal_sudoku_555 | 2..1.46.....75..121..2..3.46...41..3..3.624..8..37..26.8162...9.....7...3..4..2.. | 238194657946753812157286394625841973793562481814379526481625739562937148379418265 | normal_sudoku_555 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 2 . . 1 . 4 6 . .
. . . 7 5 . . 1 2
1 . . 2 . . 3 . 4
6 . . . 4 1 . . 3
. . 3 . 6 2 4 . .
8 . . 3 7 . . 2 6
. 8 1 6 2 . . . 9
. . . . . 7 . . .
3 . . 4 . . 2 . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 238194657946753812157286394625841973793562481814379526481625739562937148379418265 #1 Hard (1018)
Locked Candidates Type 1 (Pointing): 8 in b5 => r8c4<>8
Hidden Pair: 3,4 in r78c8 => r78c8<>5, r7c8<>7, r8c8<>6, r8c8<>8
Hidden Single: r9c8=6
Hidden Pair: 2,6 in r8c23 => r8c23<>4, r8c23<>5, r8c23<>9
Locked ... | hard |
normal_sudoku_2737 | 18...9..44....8...92.....6..18..234.3.9...27.2.4..3.51.92.3.......95...2..1284693 | 187629534436578129925341867518792346369415278274863951692137485843956712751284693 | normal_sudoku_2737 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 1 8 . . . 9 . . 4
4 . . . . 8 . . .
9 2 . . . . . 6 .
. 1 8 . . 2 3 4 .
3 . 9 . . . 2 7 .
2 . 4 . . 3 . 5 1
. 9 2 . 3 . . . .
. . . 9 5 . . . 2
. . 1 2 8 4 6 9 3 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 187629534436578129925341867518792346369415278274863951692137485843956712751284693 #1 Easy (310)
Hidden Single: r7c7=4
Hidden Single: r8c2=4
Hidden Single: r7c9=5
Hidden Single: r8c3=3
Hidden Single: r2c2=3
Hidden Single: r8c7=7
Naked Single: r1c7=5
Hidden Single: r3c4=3
Hidden Single: r1c8=3
... | easy |
normal_sudoku_941 | 3.5724....2163.....675.1.3.2.61438.9..32.7....4..563..61.372..4.34.15...5.246.1.3 | 385724916421639785967581432276143859853297641149856327618372594734915268592468173 | normal_sudoku_941 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 3 . 5 7 2 4 . . .
. 2 1 6 3 . . . .
. 6 7 5 . 1 . 3 .
2 . 6 1 4 3 8 . 9
. . 3 2 . 7 . . .
. 4 . . 5 6 3 . .
6 1 . 3 7 2 . . 4
. 3 4 . 1 5 . . .
5 . 2 4 6 . 1 . 3 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 385724916421639785967581432276143859853297641149856327618372594734915268592468173 #1 Hard (628)
Naked Pair: 8,9 in r6c34 => r6c1<>8, r6c1<>9
X-Wing: 7 r49 c28 => r268c8<>7
Remote Pair: 8/9 r7c3 -9- r6c3 -8- r6c4 -9- r8c4 => r8c1<>8, r8c1<>9
Naked Single: r8c1=7
Naked Single: r6c1=1
Naked Single: r6c8=... | hard |
normal_sudoku_877 | ...4.1.3..9136.8.72..7..1.....8..9...5.1...467..649.851..276.9.362984571..7513... | 578421639491365827236798154624857913859132746713649285145276398362984571987513462 | normal_sudoku_877 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . . 4 . 1 . 3 .
. 9 1 3 6 . 8 . 7
2 . . 7 . . 1 . .
. . . 8 . . 9 . .
. 5 . 1 . . . 4 6
7 . . 6 4 9 . 8 5
1 . . 2 7 6 . 9 .
3 6 2 9 8 4 5 7 1
. . 7 5 1 3 . . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 578421639491365827236798154624857913859132746713649285145276398362984571987513462 #1 Easy (156)
Naked Single: r6c3=3
Naked Single: r6c7=2
Full House: r6c2=1
Naked Single: r1c7=6
Naked Single: r4c8=1
Naked Single: r4c9=3
Full House: r5c7=7
Naked Single: r3c8=5
Naked Single: r9c7=4
Full Hous... | easy |
normal_sudoku_2436 | 1.9.....35..3...9.3.46....2813...27592.73.14664.1..938.3....5.4.9..8.....5..7..69 | 169827453582314697374695812813946275925738146647152938731269584496583721258471369 | normal_sudoku_2436 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 1 . 9 . . . . . 3
5 . . 3 . . . 9 .
3 . 4 6 . . . . 2
8 1 3 . . . 2 7 5
9 2 . 7 3 . 1 4 6
6 4 . 1 . . 9 3 8
. 3 . . . . 5 . 4
. 9 . . 8 . . . .
. 5 . . 7 . . 6 9 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 169827453582314697374695812813946275925738146647152938731269584496583721258471369 #1 Medium (322)
Naked Single: r5c3=5
Full House: r5c6=8
Full House: r6c3=7
Hidden Single: r2c3=2
Hidden Single: r1c4=8
Naked Single: r1c8=5
Hidden Single: r7c1=7
Hidden Single: r8c4=5
Locked Candidates Type 2 (C... | medium |
normal_sudoku_5903 | .5.62...46.........3..419.6.7.8.62454.5.....8..8.5..7..1..8.5.75.72634...4.175..2 | 751629384694538721832741956173896245425317698968452173216984537587263419349175862 | normal_sudoku_5903 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 5 . 6 2 . . . 4
6 . . . . . . . .
. 3 . . 4 1 9 . 6
. 7 . 8 . 6 2 4 5
4 . 5 . . . . . 8
. . 8 . 5 . . 7 .
. 1 . . 8 . 5 . 7
5 . 7 2 6 3 4 . .
. 4 . 1 7 5 . . 2 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 751629384694538721832741956173896245425317698968452173216984537587263419349175862 #1 Easy (216)
Naked Single: r3c3=2
Hidden Single: r2c3=4
Hidden Single: r2c8=2
Hidden Single: r7c1=2
Hidden Single: r2c4=5
Naked Single: r3c4=7
Naked Single: r3c1=8
Full House: r3c8=5
Naked Single: r2c2=9
Nak... | easy |
normal_sudoku_1856 | 14362.97.98.7136.4..79.413.3..172...4.139...6..9..6.13.3.2.1.97....3786.7.....3.. | 143628975985713624627954138368172459471395286259846713834261597592437861716589342 | normal_sudoku_1856 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 1 4 3 6 2 . 9 7 .
9 8 . 7 1 3 6 . 4
. . 7 9 . 4 1 3 .
3 . . 1 7 2 . . .
4 . 1 3 9 . . . 6
. . 9 . . 6 . 1 3
. 3 . 2 . 1 . 9 7
. . . . 3 7 8 6 .
7 . . . . . 3 . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 143628975985713624627954138368172459471395286259846713834261597592437861716589342 #1 Hard (862)
Hidden Single: r4c9=9
Hidden Single: r8c2=9
Hidden Single: r9c6=9
Hidden Single: r8c9=1
Hidden Single: r9c2=1
Locked Candidates Type 1 (Pointing): 4 in b5 => r6c7<>4
Locked Candidates Type 1 (Pointing): ... | hard |
normal_sudoku_2000 | .3.6..285659.2.4172.8.4.6939..27.851.7....32.5.68..97.7....4.69...7...4.....8..32 | 437691285659328417218547693943276851871459326526813974782134569395762148164985732 | normal_sudoku_2000 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 3 . 6 . . 2 8 5
6 5 9 . 2 . 4 1 7
2 . 8 . 4 . 6 9 3
9 . . 2 7 . 8 5 1
. 7 . . . . 3 2 .
5 . 6 8 . . 9 7 .
7 . . . . 4 . 6 9
. . . 7 . . . 4 .
. . . . 8 . . 3 2 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 437691285659328417218547693943276851871459326526813974782134569395762148164985732 #1 Easy (160)
Naked Single: r3c2=1
Naked Single: r4c2=4
Naked Single: r2c4=3
Full House: r2c6=8
Naked Single: r6c9=4
Full House: r5c9=6
Full House: r8c9=8
Naked Single: r1c1=4
Full House: r1c3=7
Naked Single:... | easy |
normal_sudoku_379 | .3..1.86..68..74..5....8..3.5...3..89....5.2...67..5....5..9..66...712.....456189 | 239514867168937452547268913452193678971685324386742591815329746694871235723456189 | normal_sudoku_379 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 3 . . 1 . 8 6 .
. 6 8 . . 7 4 . .
5 . . . . 8 . . 3
. 5 . . . 3 . . 8
9 . . . . 5 . 2 .
. . 6 7 . . 5 . .
. . 5 . . 9 . . 6
6 . . . 7 1 2 . .
. . . 4 5 6 1 8 9 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 239514867168937452547268913452193678971685324386742591815329746694871235723456189 #1 Extreme (4952)
Locked Candidates Type 1 (Pointing): 2 in b8 => r7c12<>2
Locked Candidates Type 1 (Pointing): 7 in b9 => r7c12<>7
Locked Candidates Type 2 (Claiming): 3 in r9 => r7c1,r8c3<>3
2-String Kite: 9 in r3c7,r6c5 (co... | extremely hard |
normal_sudoku_3358 | .3..5....4....9.85..5.......849261.75617389247...4..6..5...4...9..8...46.4..9.2.1 | 638257419472169385195483672384926157561738924729541863256314798913872546847695231 | normal_sudoku_3358 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 3 . . 5 . . . .
4 . . . . 9 . 8 5
. . 5 . . . . . .
. 8 4 9 2 6 1 . 7
5 6 1 7 3 8 9 2 4
7 . . . 4 . . 6 .
. 5 . . . 4 . . .
9 . . 8 . . . 4 6
. 4 . . 9 . 2 . 1 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 638257419472169385195483672384926157561738924729541863256314798913872546847695231 #1 Extreme (2330)
Naked Single: r4c1=3
Full House: r4c8=5
Hidden Single: r3c5=8
Hidden Single: r8c7=5
Locked Candidates Type 1 (Pointing): 8 in b9 => r7c13<>8
Uniqueness Test 4: 3/8 in r6c79,r7c79 => r7c79<>3
Locked C... | extremely hard |
normal_sudoku_5198 | 2.84.1.5...5..2...9..6..2.1.8..2.467629...518.47...92385....6.2.962.8.757.25..894 | 268471359315982746974653281583129467629347518147865923851794632496238175732516894 | normal_sudoku_5198 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 2 . 8 4 . 1 . 5 .
. . 5 . . 2 . . .
9 . . 6 . . 2 . 1
. 8 . . 2 . 4 6 7
6 2 9 . . . 5 1 8
. 4 7 . . . 9 2 3
8 5 . . . . 6 . 2
. 9 6 2 . 8 . 7 5
7 . 2 5 . . 8 9 4 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 268471359315982746974653281583129467629347518147865923851794632496238175732516894 #1 Hard (352)
Naked Single: r7c8=3
Full House: r8c7=1
Locked Candidates Type 1 (Pointing): 3 in b4 => r4c46<>3
W-Wing: 4/3 in r3c3,r8c1 connected by 3 in r4c13 => r2c1,r7c3<>4
Naked Single: r7c3=1
Naked Single: r4c3=3
... | hard |
normal_sudoku_2605 | 917635..8.36.14759...97.163428..7.1..6.4.....37.1......82..15.........81....6...2 | 917635248236814759854972163428597316169423875375186924682341597743259681591768432 | normal_sudoku_2605 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 9 1 7 6 3 5 . . 8
. 3 6 . 1 4 7 5 9
. . . 9 7 . 1 6 3
4 2 8 . . 7 . 1 .
. 6 . 4 . . . . .
3 7 . 1 . . . . .
. 8 2 . . 1 5 . .
. . . . . . . 8 1
. . . . 6 . . . 2 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 917635248236814759854972163428597316169423875375186924682341597743259681591768432 #1 Hard (606)
Hidden Single: r6c6=6
Locked Candidates Type 1 (Pointing): 9 in b4 => r89c3<>9
Locked Candidates Type 2 (Claiming): 8 in c5 => r5c6<>8
Naked Pair: 4,5 in r3c23 => r3c1<>5
Skyscraper: 3 in r4c7,r7c8 (connected ... | hard |
normal_sudoku_2689 | ...1.....9..7...52..8..9...4298..517316257498..7914263....9..25..567..8..91.....6 | 672145839934768152158329674429836517316257498587914263863491725245673981791582346 | normal_sudoku_2689 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . . 1 . . . . .
9 . . 7 . . . 5 2
. . 8 . . 9 . . .
4 2 9 8 . . 5 1 7
3 1 6 2 5 7 4 9 8
. . 7 9 1 4 2 6 3
. . . . 9 . . 2 5
. . 5 6 7 . . 8 .
. 9 1 . . . . . 6 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 672145839934768152158329674429836517316257498587914263863491725245673981791582346 #1 Easy (174)
Naked Single: r8c1=2
Hidden Single: r2c7=1
Naked Single: r3c9=4
Naked Single: r1c9=9
Full House: r8c9=1
Naked Single: r8c6=3
Naked Single: r4c6=6
Full House: r4c5=3
Naked Single: r7c4=4
Naked Si... | easy |
normal_sudoku_2990 | ...58.....3..1.7.49..73.6..3.9..8..7....4.8.35..273916.6.8........497.6.4973..1.8 | 746589231835612794912734685329168547671945823584273916263851479158497362497326158 | normal_sudoku_2990 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . . 5 8 . . . .
. 3 . . 1 . 7 . 4
9 . . 7 3 . 6 . .
3 . 9 . . 8 . . 7
. . . . 4 . 8 . 3
5 . . 2 7 3 9 1 6
. 6 . 8 . . . . .
. . . 4 9 7 . 6 .
4 9 7 3 . . 1 . 8 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 746589231835612794912734685329168547671945823584273916263851479158497362497326158 #1 Easy (200)
Hidden Single: r7c8=7
Hidden Single: r7c6=1
Naked Single: r7c1=2
Naked Single: r7c5=5
Naked Single: r4c5=6
Full House: r9c5=2
Full House: r9c6=6
Full House: r9c8=5
Naked Single: r7c3=3
Naked Sin... | easy |
normal_sudoku_2376 | 3728965149..45...71..372.8....64...56...1.....1.7.5.......8...2.61...4..238964751 | 372896514986451237145372689823649175657218943419735826594187362761523498238964751 | normal_sudoku_2376 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 3 7 2 8 9 6 5 1 4
9 . . 4 5 . . . 7
1 . . 3 7 2 . 8 .
. . . 6 4 . . . 5
6 . . . 1 . . . .
. 1 . 7 . 5 . . .
. . . . 8 . . . 2
. 6 1 . . . 4 . .
2 3 8 9 6 4 7 5 1 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 372896514986451237145372689823649175657218943419735826594187362761523498238964751 #1 Easy (164)
Full House: r2c6=1
Naked Single: r2c2=8
Naked Single: r2c3=6
Naked Single: r5c4=2
Naked Single: r6c5=3
Full House: r8c5=2
Naked Single: r8c4=5
Full House: r7c4=1
Naked Single: r8c1=7
Naked Singl... | easy |
normal_sudoku_757 | ..2.693.8....2596....8...25..92.78..7.659.234.....6719.7.9...83..86..5...4......2 | 452169378837425961961873425319247856786591234524386719275914683198632547643758192 | normal_sudoku_757 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . 2 . 6 9 3 . 8
. . . . 2 5 9 6 .
. . . 8 . . . 2 5
. . 9 2 . 7 8 . .
7 . 6 5 9 . 2 3 4
. . . . . 6 7 1 9
. 7 . 9 . . . 8 3
. . 8 6 . . 5 . .
. 4 . . . . . . 2 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 452169378837425961961873425319247856786591234524386719275914683198632547643758192 #1 Hard (1350)
Naked Single: r4c8=5
Full House: r4c9=6
Hidden Single: r3c2=6
Hidden Single: r3c1=9
Hidden Single: r8c2=9
Hidden Single: r9c8=9
Hidden Single: r6c2=2
Hidden Single: r1c2=5
Locked Candidates Type 1... | hard |
normal_sudoku_6488 | 96.5.3.275..2.6....3..4.5..14.652..93261.9..5.59.34....95421...4.3.659..6..39..5. | 964583127587216394231947568148652739326179845759834216895421673413765982672398451 | normal_sudoku_6488 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 9 6 . 5 . 3 . 2 7
5 . . 2 . 6 . . .
. 3 . . 4 . 5 . .
1 4 . 6 5 2 . . 9
3 2 6 1 . 9 . . 5
. 5 9 . 3 4 . . .
. 9 5 4 2 1 . . .
4 . 3 . 6 5 9 . .
6 . . 3 9 . . 5 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 964583127587216394231947568148652739326179845759834216895421673413765982672398451 #1 Hard (466)
Hidden Single: r8c9=2
Hidden Single: r3c1=2
Hidden Single: r9c3=2
Hidden Single: r3c4=9
Hidden Single: r2c8=9
Hidden Single: r6c7=2
Hidden Single: r5c8=4
Hidden Single: r7c7=6
Locked Candidates Typ... | hard |
normal_sudoku_998 | .7..9...2..26.49..9......4...954827.7..2364.....1798...9.7.53.4..648..9...7....28 | 674391582812654937953827146369548271781236459425179863298765314136482795547913628 | normal_sudoku_998 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 7 . . 9 . . . 2
. . 2 6 . 4 9 . .
9 . . . . . . 4 .
. . 9 5 4 8 2 7 .
7 . . 2 3 6 4 . .
. . . 1 7 9 8 . .
. 9 . 7 . 5 3 . 4
. . 6 4 8 . . 9 .
. . 7 . . . . 2 8 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 674391582812654937953827146369548271781236459425179863298765314136482795547913628 #1 Hard (470)
Hidden Single: r2c9=7
Hidden Single: r3c6=7
Hidden Single: r9c4=9
Hidden Single: r5c9=9
Hidden Single: r8c7=7
Hidden Single: r3c5=2
Hidden Single: r8c6=2
Hidden Single: r7c1=2
Hidden Single: r2c5=5... | hard |
normal_sudoku_2265 | 5..96.2.4..6..35.94..52..16982..5..115..7...276...2.583..2..6.5..5..61.3641359827 | 518967234276413589439528716982635471153874962764192358397281645825746193641359827 | normal_sudoku_2265 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 5 . . 9 6 . 2 . 4
. . 6 . . 3 5 . 9
4 . . 5 2 . . 1 6
9 8 2 . . 5 . . 1
1 5 . . 7 . . . 2
7 6 . . . 2 . 5 8
3 . . 2 . . 6 . 5
. . 5 . . 6 1 . 3
6 4 1 3 5 9 8 2 7 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 518967234276413589439528716982635471153874962764192358397281645825746193641359827 #1 Unfair (1504)
Hidden Single: r6c5=9
Hidden Single: r5c7=9
Hidden Single: r6c4=1
Hidden Single: r4c5=3
Locked Candidates Type 1 (Pointing): 3 in b4 => r13c3<>3
Locked Candidates Type 1 (Pointing): 4 in b9 => r45c8<>4
... | unfair |
normal_sudoku_3234 | .164385.243..1..68.8.9...3...3...6..1...532.9.2.8..37..9.3..8..3....4.....7....23 | 716438592439512768582967134943721685178653249625849371294375816361284957857196423 | normal_sudoku_3234 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 1 6 4 3 8 5 . 2
4 3 . . 1 . . 6 8
. 8 . 9 . . . 3 .
. . 3 . . . 6 . .
1 . . . 5 3 2 . 9
. 2 . 8 . . 3 7 .
. 9 . 3 . . 8 . .
3 . . . . 4 . . .
. . 7 . . . . 2 3 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 716438592439512768582967134943721685178653249625849371294375816361284957857196423 #1 Hard (1328)
Naked Single: r1c8=9
Full House: r1c1=7
Naked Single: r2c7=7
Hidden Single: r2c3=9
Locked Candidates Type 1 (Pointing): 2 in b1 => r3c56<>2
Locked Candidates Type 1 (Pointing): 5 in b1 => r3c6<>5
Naked ... | hard |
normal_sudoku_2313 | 2.6.358.7..367..5.5.7.214368713..56.6..1.7.48..9..617....56978.9..7..6..76..1...5 | 296435817143678952587921436871342569635197248429856173312569784954783621768214395 | normal_sudoku_2313 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 2 . 6 . 3 5 8 . 7
. . 3 6 7 . . 5 .
5 . 7 . 2 1 4 3 6
8 7 1 3 . . 5 6 .
6 . . 1 . 7 . 4 8
. . 9 . . 6 1 7 .
. . . 5 6 9 7 8 .
9 . . 7 . . 6 . .
7 6 . . 1 . . . 5 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 296435817143678952587921436871342569635197248429856173312569784954783621768214395 #1 Unfair (1358)
Locked Candidates Type 1 (Pointing): 8 in b1 => r8c2<>8
Locked Candidates Type 1 (Pointing): 4 in b4 => r6c45<>4
Locked Candidates Type 2 (Claiming): 4 in c3 => r7c12,r8c2<>4
Locked Candidates Type 2 (Claiming... | unfair |
normal_sudoku_1197 | 725....13...6..257.3.75...4.8....596......4719745163282...4...9.139..745........2 | 725489613849631257136752984381274596562893471974516328258347169613928745497165832 | normal_sudoku_1197 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 7 2 5 . . . . 1 3
. . . 6 . . 2 5 7
. 3 . 7 5 . . . 4
. 8 . . . . 5 9 6
. . . . . . 4 7 1
9 7 4 5 1 6 3 2 8
2 . . . 4 . . . 9
. 1 3 9 . . 7 4 5
. . . . . . . . 2 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 725489613849631257136752984381274596562893471974516328258347169613928745497165832 #1 Easy (188)
Hidden Single: r1c7=6
Naked Single: r3c8=8
Full House: r3c7=9
Hidden Single: r3c6=2
Naked Single: r8c6=8
Naked Single: r8c1=6
Full House: r8c5=2
Naked Single: r3c1=1
Full House: r3c3=6
Naked Sin... | easy |
normal_sudoku_1078 | ...74519.4...182.7.7.2.95485....3...3.7..28...2...4..99.4.27.81...48697578.9.1... | 832745196495618237671239548549863712367192854128574369954327681213486975786951423 | normal_sudoku_1078 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . . 7 4 5 1 9 .
4 . . . 1 8 2 . 7
. 7 . 2 . 9 5 4 8
5 . . . . 3 . . .
3 . 7 . . 2 8 . .
. 2 . . . 4 . . 9
9 . 4 . 2 7 . 8 1
. . . 4 8 6 9 7 5
7 8 . 9 . 1 . . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 832745196495618237671239548549863712367192854128574369954327681213486975786951423 #1 Hard (930)
Locked Candidates Type 1 (Pointing): 2 in b9 => r9c3<>2
Locked Candidates Type 2 (Claiming): 3 in r8 => r7c2,r9c3<>3
Naked Pair: 3,6 in r1c29 => r1c13<>6, r1c3<>3
Naked Pair: 3,6 in r2c48 => r2c23<>3, r2c23<>6
... | hard |
normal_sudoku_4434 | .9.8...7...46....8....419..5..9......3916.7....732.89....5...2.3....6..9..14..3.. | 695832471714659238823741965582974613439168752167325894946583127378216549251497386 | normal_sudoku_4434 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 9 . 8 . . . 7 .
. . 4 6 . . . . 8
. . . . 4 1 9 . .
5 . . 9 . . . . .
. 3 9 1 6 . 7 . .
. . 7 3 2 . 8 9 .
. . . 5 . . . 2 .
3 . . . . 6 . . 9
. . 1 4 . . 3 . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 695832471714659238823741965582974613439168752167325894946583127378216549251497386 #1 Extreme (4744)
Locked Candidates Type 1 (Pointing): 5 in b5 => r12c6<>5
Finned Swordfish: 5 c357 r128 fr3c3 => r2c2<>5
Forcing Chain Contradiction in c3 => r1c9<>5
r1c9=5 r1c3<>5
r1c9=5 r1c5<>5 r1c5=3 r1c3<>3 r3c3=3 r3c3<>... | extremely hard |
normal_sudoku_1730 | ..394.1..1.68.3..9..9651...5273968416..7.8...938.147.....48.......16..8.8...3..17 | 753942168146873259289651374527396841614728935938514726371485692492167583865239417 | normal_sudoku_1730 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . 3 9 4 . 1 . .
1 . 6 8 . 3 . . 9
. . 9 6 5 1 . . .
5 2 7 3 9 6 8 4 1
6 . . 7 . 8 . . .
9 3 8 . 1 4 7 . .
. . . 4 8 . . . .
. . . 1 6 . . 8 .
8 . . . 3 . . 1 7 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 753942168146873259289651374527396841614728935938514726371485692492167583865239417 #1 Easy (184)
Naked Single: r5c5=2
Full House: r2c5=7
Full House: r6c4=5
Full House: r1c6=2
Full House: r9c4=2
Naked Single: r1c1=7
Hidden Single: r3c1=2
Naked Single: r7c1=3
Full House: r8c1=4
Naked Single: ... | easy |
normal_sudoku_966 | .9.451786.....9253..5.3.914......37564.5..89..57...64..8...54695...6.128..69..537 | 293451786174689253865237914928146375641573892357892641782315469539764128416928537 | normal_sudoku_966 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 9 . 4 5 1 7 8 6
. . . . . 9 2 5 3
. . 5 . 3 . 9 1 4
. . . . . . 3 7 5
6 4 . 5 . . 8 9 .
. 5 7 . . . 6 4 .
. 8 . . . 5 4 6 9
5 . . . 6 . 1 2 8
. . 6 9 . . 5 3 7 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 293451786174689253865237914928146375641573892357892641782315469539764128416928537 #1 Hard (522)
Hidden Single: r8c3=9
Hidden Single: r8c2=3
Naked Single: r8c4=7
Full House: r8c6=4
Hidden Single: r2c3=4
Hidden Single: r9c1=4
Hidden Single: r7c4=3
Hidden Single: r7c1=7
Hidden Single: r4c5=4
... | hard |
normal_sudoku_4015 | 7..1...65.6..4.7..2....6.43...2..8.49..31.652.52.643.74....1....31.8247...94..... | 784123965163549728295876143316257894947318652852964317428791536531682479679435281 | normal_sudoku_4015 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 7 . . 1 . . . 6 5
. 6 . . 4 . 7 . .
2 . . . . 6 . 4 3
. . . 2 . . 8 . 4
9 . . 3 1 . 6 5 2
. 5 2 . 6 4 3 . 7
4 . . . . 1 . . .
. 3 1 . 8 2 4 7 .
. . 9 4 . . . . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 784123965163549728295876143316257894947318652852964317428791536531682479679435281 #1 Easy (220)
Hidden Single: r2c8=2
Naked Single: r1c7=9
Naked Single: r3c7=1
Full House: r2c9=8
Hidden Single: r1c5=2
Hidden Single: r3c2=9
Hidden Single: r2c1=1
Naked Single: r6c1=8
Naked Single: r6c4=9
Ful... | easy |
normal_sudoku_5943 | .65..713.1..5.34.7..3.125.895.73..1...42...75.7..5.3...873.69515...2.7.3..91.5.8. | 465987132128563497793412568952738614634291875871654329287346951516829743349175286 | normal_sudoku_5943 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 6 5 . . 7 1 3 .
1 . . 5 . 3 4 . 7
. . 3 . 1 2 5 . 8
9 5 . 7 3 . . 1 .
. . 4 2 . . . 7 5
. 7 . . 5 . 3 . .
. 8 7 3 . 6 9 5 1
5 . . . 2 . 7 . 3
. . 9 1 . 5 . 8 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 465987132128563497793412568952738614634291875871654329287346951516829743349175286 #1 Easy (186)
Naked Single: r7c5=4
Full House: r7c1=2
Naked Single: r9c5=7
Hidden Single: r3c1=7
Hidden Single: r1c9=2
Hidden Single: r2c2=2
Naked Single: r2c3=8
Naked Single: r1c1=4
Full House: r3c2=9
Naked ... | easy |
normal_sudoku_3887 | 4..6...21..1..3.7.9....536...97418...1..69.4.74..3.19..5...7.8.2...56.1...7..4.3. | 435678921861923574972415368629741853513869247748532196356197482284356719197284635 | normal_sudoku_3887 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 4 . . 6 . . . 2 1
. . 1 . . 3 . 7 .
9 . . . . 5 3 6 .
. . 9 7 4 1 8 . .
. 1 . . 6 9 . 4 .
7 4 . . 3 . 1 9 .
. 5 . . . 7 . 8 .
2 . . . 5 6 . 1 .
. . 7 . . 4 . 3 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 435678921861923574972415368629741853513869247748532196356197482284356719197284635 #1 Hard (534)
Full House: r4c8=5
Naked Single: r1c6=8
Full House: r6c6=2
Naked Single: r6c9=6
Hidden Single: r9c5=8
Hidden Single: r7c3=6
Naked Single: r9c1=1
Naked Single: r9c2=9
Naked Single: r7c1=3
Naked S... | hard |
normal_sudoku_6249 | .21.3.6..9..4..2..34...5.8..84.9.5.6.....67..6..5.4.2.46...9.5.17.85346...364...1 | 821937645957468213346125987784291536215386794639574128468719352172853469593642871 | normal_sudoku_6249 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 2 1 . 3 . 6 . .
9 . . 4 . . 2 . .
3 4 . . . 5 . 8 .
. 8 4 . 9 . 5 . 6
. . . . . 6 7 . .
6 . . 5 . 4 . 2 .
4 6 . . . 9 . 5 .
1 7 . 8 5 3 4 6 .
. . 3 6 4 . . . 1 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 821937645957468213346125987784291536215386794639574128468719352172853469593642871 #1 Easy (176)
Naked Single: r2c2=5
Naked Single: r9c2=9
Naked Single: r8c3=2
Full House: r8c9=9
Naked Single: r9c7=8
Naked Single: r9c8=7
Naked Single: r7c3=8
Full House: r9c1=5
Full House: r9c6=2
Naked Singl... | easy |
normal_sudoku_2663 | 8..5.6.1..65...4..1..9...5.32.8..59.458693127.1..52...5.2..9..1..1..5.3..831....5 | 897546312265731489134928756326817594458693127719452863572389641641275938983164275 | normal_sudoku_2663 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 8 . . 5 . 6 . 1 .
. 6 5 . . . 4 . .
1 . . 9 . . . 5 .
3 2 . 8 . . 5 9 .
4 5 8 6 9 3 1 2 7
. 1 . . 5 2 . . .
5 . 2 . . 9 . . 1
. . 1 . . 5 . 3 .
. 8 3 1 . . . . 5 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 897546312265731489134928756326817594458693127719452863572389641641275938983164275 #1 Easy (292)
Hidden Single: r2c1=2
Hidden Single: r8c4=2
Hidden Single: r2c9=9
Hidden Single: r9c7=2
Hidden Single: r9c1=9
Hidden Single: r8c7=9
Hidden Single: r6c3=9
Hidden Single: r1c2=9
Hidden Single: r8c1=6... | easy |
normal_sudoku_3208 | 1..7.549..492...75....4..1..2...4...5.382714.4...5..279.437.2.12..59.734.7.4.2.6. | 132785496649231875857649312721964583563827149498153627984376251216598734375412968 | normal_sudoku_3208 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 1 . . 7 . 5 4 9 .
. 4 9 2 . . . 7 5
. . . . 4 . . 1 .
. 2 . . . 4 . . .
5 . 3 8 2 7 1 4 .
4 . . . 5 . . 2 7
9 . 4 3 7 . 2 . 1
2 . . 5 9 . 7 3 4
. 7 . 4 . 2 . 6 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 132785496649231875857649312721964583563827149498153627984376251216598734375412968 #1 Extreme (2850)
Hidden Single: r9c1=3
Locked Candidates Type 1 (Pointing): 6 in b8 => r236c6<>6
Locked Candidates Type 2 (Claiming): 1 in c4 => r4c5,r6c6<>1
Finned X-Wing: 3 r26 c67 fr2c5 => r3c6<>3
AIC: 6 6- r4c5 -3- r6c... | extremely hard |
normal_sudoku_2352 | ..352.486.25.8419...46..2..54.......2....5...8....2.1.952476831...2319....7958624 | 193527486625384197784619253541893762279165348836742519952476831468231975317958624 | normal_sudoku_2352 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . . 3 5 2 . 4 8 6
. 2 5 . 8 4 1 9 .
. . 4 6 . . 2 . .
5 4 . . . . . . .
2 . . . . 5 . . .
8 . . . . 2 . 1 .
9 5 2 4 7 6 8 3 1
. . . 2 3 1 9 . .
. . 7 9 5 8 6 2 4 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 193527486625384197784619253541893762279165348836742519952476831468231975317958624 #1 Easy (196)
Hidden Single: r2c1=6
Naked Single: r8c1=4
Hidden Single: r3c2=8
Naked Single: r8c2=6
Naked Single: r8c3=8
Hidden Single: r9c1=3
Full House: r9c2=1
Hidden Single: r3c5=1
Naked Single: r3c1=7
Ful... | easy |
normal_sudoku_1968 | .3...1..2..29..14.1...2.8....8.19..4.1.7..92.4..2.631.951..246.7..1.52.9..3.9...1 | 834571692572968143169423875628319754315784926497256318951832467786145239243697581 | normal_sudoku_1968 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 3 . . . 1 . . 2
. . 2 9 . . 1 4 .
1 . . . 2 . 8 . .
. . 8 . 1 9 . . 4
. 1 . 7 . . 9 2 .
4 . . 2 . 6 3 1 .
9 5 1 . . 2 4 6 .
7 . . 1 . 5 2 . 9
. . 3 . 9 . . . 1 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 834571692572968143169423875628319754315784926497256318951832467786145239243697581 #1 Extreme (3796)
Locked Candidates Type 1 (Pointing): 8 in b6 => r7c9<>8
Locked Candidates Type 2 (Claiming): 8 in r7 => r8c5,r9c46<>8
XY-Wing: 3/5/8 in r47c4,r6c5 => r7c5<>8
Hidden Single: r7c4=8
Locked Candidates Type 1 ... | extremely hard |
normal_sudoku_6894 | .469832.118.2...362.316.......31.......65.3.73.......5.348.6..262.531.8.85142.6.3 | 746983251185247936293165748579312864412658397368794125934876512627531489851429673 | normal_sudoku_6894 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 4 6 9 8 3 2 . 1
1 8 . 2 . . . 3 6
2 . 3 1 6 . . . .
. . . 3 1 . . . .
. . . 6 5 . 3 . 7
3 . . . . . . . 5
. 3 4 8 . 6 . . 2
6 2 . 5 3 1 . 8 .
8 5 1 4 2 . 6 . 3 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 746983251185247936293165748579312864412658397368794125934876512627531489851429673 #1 Hard (1066)
Full House: r6c4=7
Naked Pair: 7,9 in r7c15 => r7c78<>7, r7c78<>9
2-String Kite: 9 in r6c5,r9c8 (connected by r7c5,r9c6) => r6c8<>9
Turbot Fish: 7 r2c5 =7= r7c5 -7- r7c1 =7= r8c3 => r2c3<>7
Turbot Fish: 9 r6c... | hard |
normal_sudoku_1632 | .81....7....8.91...5.........29854315483217969134672..2.5.7...98....3..71...9...4 | 381546972726839145459712863672985431548321796913467258265174389894253617137698524 | normal_sudoku_1632 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 8 1 . . . . 7 .
. . . 8 . 9 1 . .
. 5 . . . . . . .
. . 2 9 8 5 4 3 1
5 4 8 3 2 1 7 9 6
9 1 3 4 6 7 2 . .
2 . 5 . 7 . . . 9
8 . . . . 3 . . 7
1 . . . 9 . . . 4 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 381546972726839145459712863672985431548321796913467258265174389894253617137698524 #1 Easy (274)
Hidden Single: r3c3=9
Hidden Single: r2c2=2
Hidden Single: r3c4=7
Hidden Single: r1c7=9
Hidden Single: r8c2=9
Hidden Single: r7c6=4
Hidden Single: r8c3=4
Hidden Single: r3c5=1
Naked Single: r8c5=5
... | easy |
normal_sudoku_3924 | .5.978.1..8..245.9.943..82..4..3...1.18..7352573....6..6....1...2.....9..37.8.2.. | 352978416786124539194365827249536781618497352573812964865249173421753698937681245 | normal_sudoku_3924 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 5 . 9 7 8 . 1 .
. 8 . . 2 4 5 . 9
. 9 4 3 . . 8 2 .
. 4 . . 3 . . . 1
. 1 8 . . 7 3 5 2
5 7 3 . . . . 6 .
. 6 . . . . 1 . .
. 2 . . . . . 9 .
. 3 7 . 8 . 2 . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 352978416786124539194365827249536781618497352573812964865249173421753698937681245 #1 Unfair (1480)
Naked Single: r9c8=4
Locked Candidates Type 1 (Pointing): 2 in b4 => r4c46<>2
Locked Candidates Type 1 (Pointing): 4 in b6 => r6c45<>4
Naked Pair: 1,6 in r2c34 => r2c1<>1, r2c1<>6
Naked Triple: 1,5,9 in r78... | unfair |
normal_sudoku_5282 | .2...3..4..56...13...45...7.6.9.4..2...7.69..9...1.7.62.439...83.6.48..9.8..6.4.. | 621873594475629813893451627167984352542736981938215746254397168316548279789162435 | normal_sudoku_5282 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 2 . . . 3 . . 4
. . 5 6 . . . 1 3
. . . 4 5 . . . 7
. 6 . 9 . 4 . . 2
. . . 7 . 6 9 . .
9 . . . 1 . 7 . 6
2 . 4 3 9 . . . 8
3 . 6 . 4 8 . . 9
. 8 . . 6 . 4 . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 621873594475629813893451627167984352542736981938215746254397168316548279789162435 #1 Easy (218)
Hidden Single: r9c3=9
Hidden Single: r9c8=3
Hidden Single: r4c7=3
Naked Single: r4c5=8
Naked Single: r1c5=7
Naked Single: r4c8=5
Naked Single: r2c5=2
Full House: r5c5=3
Naked Single: r5c9=1
Full... | easy |
normal_sudoku_375 | .8.531..9971486532536729814...6..2.....1......639.2758...8..9.57.52........3.5.4. | 482531679971486532536729814847653291259178463163942758314867925795214386628395147 | normal_sudoku_375 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 8 . 5 3 1 . . 9
9 7 1 4 8 6 5 3 2
5 3 6 7 2 9 8 1 4
. . . 6 . . 2 . .
. . . 1 . . . . .
. 6 3 9 . 2 7 5 8
. . . 8 . . 9 . 5
7 . 5 2 . . . . .
. . . 3 . 5 . 4 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 482531679971486532536729814847653291259178463163942758314867925795214386628395147 #1 Easy (156)
Naked Single: r1c7=6
Full House: r1c8=7
Naked Single: r6c5=4
Full House: r6c1=1
Naked Single: r8c6=4
Naked Single: r4c8=9
Naked Single: r9c7=1
Naked Single: r7c6=7
Naked Single: r5c8=6
Naked Sin... | easy |
normal_sudoku_5634 | 6.795.21..152.6..99...71....5..9.1..1.9762.3....1.5.8....5.9.215.261..9..91.276.. | 647953218315286749928471365254398176189762534763145982876539421532614897491827653 | normal_sudoku_5634 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 6 . 7 9 5 . 2 1 .
. 1 5 2 . 6 . . 9
9 . . . 7 1 . . .
. 5 . . 9 . 1 . .
1 . 9 7 6 2 . 3 .
. . . 1 . 5 . 8 .
. . . 5 . 9 . 2 1
5 . 2 6 1 . . 9 .
. 9 1 . 2 7 6 . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 647953218315286749928471365254398176189762534763145982876539421532614897491827653 #1 Extreme (3080)
Hidden Single: r5c2=8
Hidden Single: r6c7=9
Hidden Single: r3c2=2
Locked Candidates Type 2 (Claiming): 4 in r5 => r4c89,r6c9<>4
Skyscraper: 8 in r2c5,r3c3 (connected by r7c35) => r2c1,r3c4<>8
Hidden Sin... | extremely hard |
normal_sudoku_3842 | .581..4..24..5...961..4....126735894.7.8.6.53.85..47...91..25.8.6.....21.3...1647 | 958173462243658179617249385126735894479816253385924716791462538564387921832591647 | normal_sudoku_3842 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 5 8 1 . . 4 . .
2 4 . . 5 . . . 9
6 1 . . 4 . . . .
1 2 6 7 3 5 8 9 4
. 7 . 8 . 6 . 5 3
. 8 5 . . 4 7 . .
. 9 1 . . 2 5 . 8
. 6 . . . . . 2 1
. 3 . . . 1 6 4 7 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 958173462243658179617249385126735894479816253385924716791462538564387921832591647 #1 Easy (206)
Naked Single: r7c8=3
Full House: r8c7=9
Naked Single: r9c3=2
Hidden Single: r6c1=3
Hidden Single: r3c9=5
Hidden Single: r1c6=3
Naked Single: r2c4=6
Naked Single: r7c4=4
Naked Single: r7c1=7
Full... | easy |
normal_sudoku_2952 | .5....4....97.41..6....2..34..9...675.74.3.181...783.4..5...642....4.8.18....6.3. | 758139426239764185641582793483951267567423918192678354315897642926345871874216539 | normal_sudoku_2952 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 5 . . . . 4 . .
. . 9 7 . 4 1 . .
6 . . . . 2 . . 3
4 . . 9 . . . 6 7
5 . 7 4 . 3 . 1 8
1 . . . 7 8 3 . 4
. . 5 . . . 6 4 2
. . . . 4 . 8 . 1
8 . . . . 6 . 3 . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 758139426239764185641582793483951267567423918192678354315897642926345871874216539 #1 Unfair (1078)
Locked Candidates Type 1 (Pointing): 2 in b3 => r6c8<>2
Locked Candidates Type 1 (Pointing): 9 in b4 => r789c2<>9
Naked Triple: 2,6,9 in r56c2,r6c3 => r4c23<>2
2-String Kite: 5 in r6c8,r8c6 (connected by r4c6,... | unfair |
normal_sudoku_2263 | 5326478..1489256376..3815..9.4..8.6.7....9........4.2...1.569..4....2......7.3... | 532647891148925637697381542914278365726539418385164729271456983453892176869713254 | normal_sudoku_2263 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | 5 3 2 6 4 7 8 . .
1 4 8 9 2 5 6 3 7
6 . . 3 8 1 5 . .
9 . 4 . . 8 . 6 .
7 . . . . 9 . . .
. . . . . 4 . 2 .
. . 1 . 5 6 9 . .
4 . . . . 2 . . .
. . . 7 . 3 . . . | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 532647891148925637697381542914278365726539418385164729271456983453892176869713254 #1 Easy (206)
Hidden Single: r3c9=2
Hidden Single: r6c9=9
Naked Single: r1c9=1
Full House: r1c8=9
Full House: r3c8=4
Hidden Single: r9c7=2
Naked Single: r9c1=8
Naked Single: r6c1=3
Full House: r7c1=2
Naked Si... | easy |
normal_sudoku_164 | .8..32..69.24...3.....8.5.....6.41..147528..3..6..3.457.9........1..7.59.3.2....7 | 584732916912456738673981524358694172147528693296173845769345281421867359835219467 | normal_sudoku_164 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 8 . . 3 2 . . 6
9 . 2 4 . . . 3 .
. . . . 8 . 5 . .
. . . 6 . 4 1 . .
1 4 7 5 2 8 . . 3
. . 6 . . 3 . 4 5
7 . 9 . . . . . .
. . 1 . . 7 . 5 9
. 3 . 2 . . . . 7 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 584732916912456738673981524358694172147528693296173845769345281421867359835219467 #1 Extreme (1912)
Locked Pair: 4,5 in r1c13 => r1c7,r3c13<>4, r2c2<>5
Naked Single: r3c3=3
Naked Single: r3c1=6
Hidden Single: r3c9=4
Hidden Single: r4c1=3
Hidden Single: r3c8=2
Locked Candidates Type 1 (Pointing): 9 ... | extremely hard |
normal_sudoku_1663 | .4..358...15.4.6.......1..41.3.5924757.41.3...943.71.59.15.347..37..4...45.17.9.3 | 649735821715248639328691754163859247572416398894327165981563472237984516456172983 | normal_sudoku_1663 | Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
| None | 9 | 9 | . 4 . . 3 5 8 . .
. 1 5 . 4 . 6 . .
. . . . . 1 . . 4
1 . 3 . 5 9 2 4 7
5 7 . 4 1 . 3 . .
. 9 4 3 . 7 1 . 5
9 . 1 5 . 3 4 7 .
. 3 7 . . 4 . . .
4 5 . 1 7 . 9 . 3 | Complete the sudoku board based on the rules and visual elements. | sudoku | sudoku_benchmark | hard | 649735821715248639328691754163859247572416398894327165981563472237984516456172983 #1 Extreme (1608)
Naked Single: r8c7=5
Full House: r3c7=7
Hidden Single: r3c8=5
Hidden Single: r3c1=3
Hidden Single: r2c8=3
Empty Rectangle: 6 in b2 (r4c24) => r3c2<>6
Empty Rectangle: 6 in b6 (r59c6) => r9c8<>6
Gr... | extremely hard |
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